I like Norton Antivirus and Norton Utilities but I hate Cleansweep. It really messes things up. First it puts this program called csinject.exe in your startup files and this thing is running all the time in the background and I have yet to find out what it does. So I deleted it.
Then, it always finds duplicate files and wants to delete them but they are necessary duplicate files so if you delete them, your programs will no longer work. Basically, the only good thing it does is clean out your temp folder, your Temp internet folder, and the recycle bin. But you can do all that stuff manually. Just about everything else that Cleansweep does is dangerous.
I don't even have it installed anymore. When I redo a computer, I put on SystemWorks but leave off Cleansweep.
Sorry for the rant.